Spark control and tester



INVENTORSL -fM 29/47 6 .1 ATTO NEY July 6 1926.

F. C. KNAPIK ET AL SPARK CONTROL AND TESTER Filed July 18, 1925 Vpatented July 6, 1926.

orrics.

FRANK C. KNAPIK AND JOHN S. KNAPIK, 0F BALTIMORE, MARYLAND.

SPARK CONTROL AND TESTER.

Application filed July 18, 1925. Serial No. 44,429.

This invention relates to automobile engines and their electricalequipment.

More particularly the invention relates to a spark control tester forautomobile engines.

One object-0t the invention is to improve the general construction oi adevice of this character.

A second object of the invention is to provide improved means forregulating the gap oi the spark control. p

A third object of the invention is to provide a novel device of thischaracter wherein the spark gap will be simultaneously adjusted.

iVith the above and other objects in view as will be hereinafterapparent, the invention consists in general of certain novel de tails ofconstruction and combinations parts hereinafter fully described,illustrated in the accompanying drawings ant specifically claimed.

In the accompanying drawings like characters of reference indicate likeparts in the several views. and: V

Figure 1 is a face view of the invention.

Figure 2 is a section on the line 22 o1 Figure 1.

Figure 3 is a rear view of the invention.

In the embodiment of the invention herein described there is provided ahousing com prising a cylinder 10 having on one end a flange 11. In therear end of this cylinder 10 there is secured an insulating disk 12 onthe outer or rear side of which is cemented or otherwise secured aninsulating plate 13. Through the plate 13 and bottom 12 extends a seriesof terminal members 14; having on their rear ends binding nuts 15. Eachof these members is provided with a collar 16 which fits in a recess 17in the forward face of the plate 12, also each memher is provided with anut 18 which clamps the member in position.

Secured on the front flange 11 of the housing is a face plate 19, thesame being held in position by screws 20.

lVithin the cylinder 10 is an insulating disk 21 in the center of whichis an insulated disk having in its center a bushing 22 threadedinternally to receive a screw 23 provided with a collar 24 which engagesthe inside of the front plate 19. In this disk is provided a series ofopenings 25 corresponding in number and position to the terminals 18. Ineach of these openings is seated a bushing 26 having a. separatedispositioned recess 27 on its rear side and provided on its front sidewith a pin 28 which seats within an opening 29 in the front plate 1.9.The screw 23 is provided with a turning knob 30 which is secured on theprojecting end thereof.

The casing 10 is grounded by a suitable connection and to each of theterminals 14 connected one wire leading to a respective spark plug.

ii ow by turning the knob 30 plate 21 is moved inwardly or outwardv withrespect to the terminals 1 1 so that spark is established, first betweenthe reoective terminal is and the bushing 26 and hen between the bushing26 and the side of the v 1- g a Thus the operator can observe closelythe conditions prevailing and det .lllllne which plug is not operating.

There has thus been provided a simple 9.115. etficient device of thekind described and for the purpose specified.

It is obvious that minor changes may be made in the form andconstruction of the invention without departing from the material spiritthereof. It is not, therefore, desired to confine the invention to theexact form herein shown and described, but it is desired to include allsuch as properly come within the scope claimed.

' Having thus described the invention, What is claimed as new, is:

In a device of the kind described a housing, an insulating platesupported at one end or said housing. a series of electrodes carried bysaid insulating plate, a second insulating plate movable in said housingtotures.

FRANK C. KNAPIK. JOHN S. KNAPIK.

